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Diffstat (limited to '')
| -rwxr-xr-x | src/zstd/programs/zstdgrep | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/zstd/programs/zstdgrep b/src/zstd/programs/zstdgrep new file mode 100755 index 00000000..9f871c03 --- /dev/null +++ b/src/zstd/programs/zstdgrep @@ -0,0 +1,124 @@ +#!/bin/sh +# +# Copyright (c) 2003 Thomas Klausner. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +grep=grep +zcat=zstdcat + +endofopts=0 +pattern_found=0 +grep_args="" +hyphen=0 +silent=0 + +prg=$(basename $0) + +# handle being called 'zegrep' or 'zfgrep' +case ${prg} in + *zegrep) + grep_args="-E";; + *zfgrep) + grep_args="-F";; +esac + +# skip all options and pass them on to grep taking care of options +# with arguments, and if -e was supplied + +while [ $# -gt 0 -a ${endofopts} -eq 0 ] +do + case $1 in + # from GNU grep-2.5.1 -- keep in sync! + -[ABCDXdefm]) + if [ $# -lt 2 ] + then + echo "${prg}: missing argument for $1 flag" >&2 + exit 1 + fi + case $1 in + -e) + pattern="$2" + pattern_found=1 + shift 2 + break + ;; + *) + ;; + esac + grep_args="${grep_args} $1 $2" + shift 2 + ;; + --) + shift + endofopts=1 + ;; + -) + hyphen=1 + shift + ;; + -h) + silent=1 + shift + ;; + -*) + grep_args="${grep_args} $1" + shift + ;; + *) + # pattern to grep for + endofopts=1 + ;; + esac +done + +# if no -e option was found, take next argument as grep-pattern +if [ ${pattern_found} -lt 1 ] +then + if [ $# -ge 1 ]; then + pattern="$1" + shift + elif [ ${hyphen} -gt 0 ]; then + pattern="-" + else + echo "${prg}: missing pattern" >&2 + exit 1 + fi +fi + +# call grep ... +if [ $# -lt 1 ] +then + # ... on stdin + ${zcat} -fq - | ${grep} ${grep_args} -- "${pattern}" - +else + # ... on all files given on the command line + if [ ${silent} -lt 1 -a $# -gt 1 ]; then + grep_args="-H ${grep_args}" + fi + while [ $# -gt 0 ] + do + ${zcat} -fq -- "$1" | ${grep} --label="${1}" ${grep_args} -- "${pattern}" - + shift + done +fi + +exit 0 |